EP 1751394 A2 20070214 - IMPROVED DOWN HOLE OIL AND GAS WELL HEATING SYSTEM AND METHOD FOR DOWN HOLE HEATING OF OIL AND GAS WELLS
Title (en)
IMPROVED DOWN HOLE OIL AND GAS WELL HEATING SYSTEM AND METHOD FOR DOWN HOLE HEATING OF OIL AND GAS WELLS
Title (de)
VERBESSERTES BOHRLOCHÖL- UND -GASBOHRUNGSHEIZSYSTEM UND VERFAHREN ZUR BOHRLOCHHEIZUNG VON ÖL- UND GASBOHRUNGEN
Title (fr)
SYSTEME DE CHAUFFAGE DE FOND AMELIORE DE PUITS DE PETROLE ET DE GAZ ET PROCEDE DE CHAUFFAGE DU FOND DE PUITS DE PETROLE ET DE GAZ
Publication
Application
Priority
- US 2005002095 W 20050124
- US 76356804 A 20040123
Abstract (en)
[origin: US2004216881A1] A down hole heating system for use with oil and gas wells which exhibit less than optimally achievable flow rates because of high oil viscosity and/or blockage by paraffin (or similar meltable petroleum byproducts). The heating unit the present invention includes shielding to prevent physical damage and shortages to electrical connections within the heating unit while down hole (a previously unrecognized source of system failures in prior art systems). The over-all heating system also includes heat retaining components to focus and contain heat in the production zone to promote flow to, and not just within, the production tubing.
IPC 8 full level
E21B 36/04 (2006.01); E21B 43/24 (2006.01)
CPC (source: EP US)
E21B 36/04 (2013.01 - EP US); H01R 13/5216 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2004216881 A1 20041104; US 7069993 B2 20060704; EP 1751394 A2 20070214; EP 1751394 A4 20090114; US 2005173120 A1 20050811; US 7363979 B2 20080429; WO 2005072289 A2 20050811; WO 2005072289 A3 20051013
DOCDB simple family (application)
US 76356804 A 20040123; EP 05711858 A 20050124; US 2005002095 W 20050124; US 4152505 A 20050124